Looking for rotational molding alternatives for Rhode Island? Want affordable custom plastic molding that is cost effective for Oakland area? Then give us a call at our toll free number 866-971-7861 or request a quote today!

rotational molding-Oakland-Rotational molding pertains to a plastic manufacturing solution that makes hollow stress-free items. The technique depends on high temperatures and bi axial rotation to follow up with seamless, one piece products that have varying shapes, sizes and colors. This technique is also known as rotomolding or rotocasting. Sometimes the term slush moulding is used for certain liquid vinyl forms.

The feature that makes this different from other plastic manufacturing methods because no pressure is called for. It also has few rivals when it comes down to the creation of sizable hollow products which are long-lasting and inexpensive.There is a variety of items that are created by this process including large water tanks, automobile items, sophisticated molded medical items, leisure equipment, toys, canoes, industrial equipment among many others.This is because of the flexibility in regards to style and forms that the process produces

Benefits of Using Rotomolding to Manufacture Plastic Products

  • Relatively low tooling costs.
    When compared to other plastic manufacturing processes in Oakland RI 2858, it is a cheaper way of making plastics. This is because apart from the fact that no pressure is required, the cost of mold preparation is low.
  • A wide array of design options.
    There is no limit to the kind of design one may want to create. The rotomolding process therefore allows for the manufacturing of products that have complex shapes for different purposes.
  • Size.
    The process provides room for the manufacturing of products of any size, large or small. As mentioned earlier, it has few competitors when it comes to the making of large tanks at low costs.
  • Low risk.
    Due to the low costs of creating a mould, the process allows for test runs before one can decide whether to do mass production. It therefore minimizes the risk of losing a lot of investment.
  • Durable products.
    The process allows for even coating of the mould with the heated polymer, giving the product a wall with uniform thickness. It also gives the option of double coating for increased durability. Sometimes metal inserts are placed inside the mould to further strengthen the product.
  • Environmentally friendly.
    There is no waste that could have a negative impact on the environment because the products that cannot be used are reground and reused as polymer.

Examples of Products Made by Rotational Molding

Plastic Products-Oakland-Rotocasting is a very versatile process, making it possible to create a variety of products for different industries.

  • Agricultural industry– From cattle feeders, water troughs, spray tanks etc.
  • Automotive industry– Filler tubes, dash boards, arm rests, sun visors, air conditioner duct work etc.
  • Furniture– We have plastic cabinets, chairs and tables made from this form of moulding.

There are numerous Rhode Island plastic products also that have been made for the marine industry, lighting, waste storage and transportation, kayaks etc.

Few Disadvantages – There are nominal disadvantages that have been associated with rotocasting. For instance:

  • – The process is relatively slow when compared to injection moulding.
  • – There is a limitation when it comes to the type of raw material you can use. Only poly based and nylon polymers can be used.
  • – The process comes with an increased cost because the polymer has to be ground to powder form before use.
    These limitations are often overlooked considering that the process is still relatively cheap and offers more in terms of variety when it comes to the finished range of products.

Remember – There are new developments and discoveries that are being made as the world of plastic manufacturing in Oakland Rhode Island continuously. For instance, tests are being done to see whether there are other materials that can be used for this process. But so far, rotomoulding offers a good option for the production of a wide range of inexpensive plastic products.

The Roto-Molding Process in Detail

This molding process has been used since earlier times for creatingvseverl product lines. Egyptians as an example, employed rotocasting procedures in the creating of ceramics. The Swiss were also utilizing this rotation type to create hollow chocolate eggs. Some plastic items in the USA were created using this method some time between 1940 and 1950. The process has however taken very long to take affect because it was looked at to be a very slow-moving process

1. Mold prep work.
A fixed quantity of polymer in grain form is packed into a hollow mould. The mold is usually crafted from cast aluminium or sheet steel component. The coloring needed for the final goods is pre compounded into the polymer. The most generally used powder resin is polythene, but polyvinyl chloride and nylon can also be used in this format of plastic engineering.

Pre-heating of the oven follows, and it may be done by either conduction, convection or sometimes radiation. It is warmed to temperatures between 500-700F. The mold with the powdered polymer is then locked and positioned into the oven.

2. The heat and fusion phase.
Once inside the oven, the mould is rotated on two axis so the powdered polymer melts from the heat and coats the inside if the mold. The turning is done slowly, about 20 rotations per sixty seconds. The main thing that is important at this moment is the amount of time the mould will spend within the oven. If it stays to long, the material will lose value and strength, producing a faulty product. If it is taken out from the oven too early, the polymer will not have liquefied correctly, which generates bubbles in the finalized product line.

3. Mould cooling.
When the component has completely spent the right amount of time in the oven, it is then extracted for cooling. This may be done by air or water, or sometimes a mixture of both which creates a cool mist. When the material cools, it reduces slightly for ease of extraction from the mold. This is one more step that depends a lot on the ideal timing, since quick cooling reduces the material too fast, causing warping of the material.

4. The offloading or de-molding step.
As soon as the component within te mould has cooled properly, the molder handling the process can then extract the finalized item from the mould. The procedure is repeated from the beginning, making a series of similar items.

For more information on the different rotational rotomolding options offered for the Oakland RI 2858 area, please call our toll free number  866-971-7861 or fill out the form on the right for a consultation!

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